I was pleasantly surprised to pull hard on an s55 AMG tonight. I didn't know too much about them, but I suspected that it would be close and that he would pull away at higher speeds.

So, I'm rushing to my buddies for the fight, and pass the amg on 84 just before the dumbarton bridge. As I slowed down for last stoplight, he raced to get in front of me. I'm thinking, "It's on, yo!" (in reference to a recent video BTW, this is a good place to race, since the traffic is clear in front of you, there are no more turnoffs, and you have excellent vision in every direction.

I'm right behind him as he takes off, and I quickly move over to the middle lane. Immediately, I'm closing the gap from starting from behind him. I passed him at about 130 and walked him to 150ish. Good times.

Well you are pretty heavily modded and of course a much lighter 135i, although I am surprised to hear you walked him at top end speeds where it's stronger hp would kick in. 4300 curb weight is no joke lol with about 500 hp im guessing? I don't think it could match the 400+ 135i with a curb weight of 3300.

S55s are family cars where the dad/mom wants either higher prestige or the extra power just to be there....
e55/63s are more for going quick... or c55/c63s

The cool thing about not knowing the stats on every production car out there, is that you're sometimes suprised when you can beat one. (Well, unless you think our cars are always the fastest. In that case, you will sometimes be disapointed).

Good to know the e55 or c55s are quicker If it were, perhaps may post would have included "I conceded at 50mph...that thing is freaking fast!"